Plate 1 1 
%MiMm 
, Sluiceways for tide gates, Wahkiakum County. Wash. B, Sluice and 
tide gates combined with highway bridge, near Savannah, Ga. C, High- 
way bridge over drain. United States Bureau of Reclamation, Rio Grande 
project, N. Mex. D, Concrete-arch culvert, Ada County, drainage district 
No. 2, Idaho. E, Ocean outlet, Oxnard drainage district, Ventura 
County, Calif. F, Flood gates, diking district No. 2. Pend Oreille County, 
Wash. G, Relief well connection, Livermore Valley, Alameda County, 
Calif. H, Concrete culvert and small flume, Ada County, drainage 
district No. 2, Idaho. I, Flume and farm crossing, United States Bureau 
of Reclamation, Rio Grande pro.iect, N. Mex. J, Culvert and connec- 
tion for flushing opon drain, drainage district No. 2, Yakima County, 
Wash. For plans see Figure 5. K, Concrete flume and structure for 
diverting water from drain for irrigation. United States Indian Irriga- 
tion Service, Yakima project. Wash. L, Concrete flume with waste gate 
for flushing drain, Boise Valley, Idaho 
